Unit 6 Chemical Reactions

Word Equations

100

"Hydrogen gas reacts with oxygen gas to form liquid water"

2H₂ + O₂  --> 2H₂O

200

"Sodium reacts with chlorine gas to produce sodium chloride"

2Na + Cl₂ --> 2NaCl

300

Aqueous solutions of calcium nitrate and sodium sulfate are added to a test tube. A precipitate forms. Write the balanced reaction and label all of your products as (s), (l), (g), or (aq)

Double Replacement

Ca(NO₃)₂(aq) + Na₂SO₄(aq) --> CaSO₄(s) + 2NaNO₃(aq)

400

"Magnesium metal reacts with Silver Nitrate to produce Magnesium Nitrate and Silver metal"

Mg + 2AgNO₃ --> 2Ag+ Mg(NO₃)₂

500

"When sodium sulfide and calcium chloride solutions are mixed, a precipitate of calcium sulfide and sodium chloride are formed"

Na₂S + CaCl₂ --> CaS + 2NaCl

Predictions

100

H₂ + O₂ --> ?

2H₂ + O₂ --> 2H₂O

200

Al + O₂ --> ?

4Al + 3O₂ --> 2Al₂O₃

300

F₂ + CaBr₂ --> ?

F₂ + CaBr₂ --> CaF₂ + Br₂

400

ZnCl₂(aq) + H₂S(aq) --> ?

ZnCl₂(aq) + H₂S(aq) --> ZnS(s) + 2HCl(aq)

500

K₂CO₃ + BaCl₂ --> ?

K₂CO₃ + BaCl₂ --> BaCO₃ + 2KCl

Balancing Equations

100

NI₃ --> N₂ + I₂

2NI₃ --> N₂ + 3I₂

200

Zn + Cu₃N₂ --> Cu + Zn₃N₂

3Zn + Cu₃N₂ --> 3Cu + Zn₃N₂

300

BN + F₂ --> BF₃ + N₂

2BN + 3F₂ --> 2BF₃ + N₂

400

As + O₂ --> As₂O₅

4As + 5O₂ --> 2As₂O₅

500

Predict & Balance 

H₂S + Al --> ?

3H₂S + 2Al --> 3H₂ + Al₂S₃

Types of Reactions

100

2H₂O  🡪  2 H₂   +  O₂

Decomposition

200

Li + Cl₂ --> ?

Synthesis

2Li + Cl₂ --> 2LiCl

300

BeCl₂ + Li → LiCl + Be

Single Displacement

400

Pb(NO₃)₂ + KI → PbI₂ + KNO₃

Double Displacement

500

KClO₃   🡪  KCl  +  O₂

Decomposition

More Equations

100

aluminum + copper (II) nitrate --> ?

What is a single replacement reaction?

aluminum + copper (II) nitrate --> aluminum nitrate + copper

200

Predict the products:
K₃PO_4(aq) + ZnSO_4(s) -->

What is a double replacement reaction?

K₃PO_4(aq)+ ZnSO_4(s) --> K₂SO_4(aq)+ Zn₃(PO₄)_2(s)

300

A piece of zinc metal is placed in a beaker of aqueous tin(II) nitrate. Write the out the balanced reaction.

Zn(s) + Sn(NO₃)₂(aq) --> Sn(s) + Zn(NO₃)₂(aq)

400

Aqueous solutions of Silver nitrate and sodium chloride are added to a test tube. Write the balanced reaction and label all of your products as (s), (l), (g), or (aq)

AgNO₃(aq) + NaCl(aq) --> AgCl(s) + NaNO₃(aq)

500

Butene (C₄H₈) and oxygen gas react to form carbon dioxide and water. Write the balanced chemical reaction and tell what type of chemical reaction it is.

C₄H₈ + 6O₂ --> 4CO₂ + 4H₂O This is a combustion reaction.